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%I #16 Aug 05 2021 07:00:30
%S 1,2,3,4,11,22,93,121,124,126,156,181,199,317,362,598,750,751,752,755,
%T 756,758,768,770,771,775,776,780,781,785,796,812,831,841,843,849,859,
%U 895,900,906,907,911,912,918,922,927,931,932
%N Numbers k such that every base-5 digit of k is a base-9 digit of k.
%H Reinhard Zumkeller, <a href="/A037396/b037396.txt">Table of n, a(n) for n = 1..10000</a>
%o (Haskell)
%o import Data.List ((\\), nub)
%o a037396 n = a037396_list !! (n-1)
%o a037396_list = filter f [1..] where
%o f x = null $ nub (ds 5 x) \\ nub (ds 9 x)
%o ds b x = if x > 0 then d : ds b x' else [] where (x', d) = divMod x b
%o -- _Reinhard Zumkeller_, May 30 2013
%o (PARI) is(n)=#setminus(Set(digits(n,5)), Set(digits(n,9)))==0 \\ _Charles R Greathouse IV_, Feb 11 2017
%Y Cf. A007091, A007095.
%Y Cf. A037393, A037394, A037395, A037397.
%K nonn,base
%O 1,2
%A _Clark Kimberling_